Tool command Language - lecture 5. (looping )

While loop:
The syntax of while loop in tcl is as
while {text condition } {
 body of loop
}  
 Example :
 set x 3
 while {$x <6} {
 incr  x 
 puts $x 
 }
                         
here the condition is ist checked and then inside loop value of x is increment by 1. when value of x becomes 6, then condition becomes false and the loop terminates.